Cordless drill battery latch button
The spring-loaded latch button that locks a battery pack into a cordless drill wears out or snaps its tab, so the pack slides off mid-job. The button is a 25 x 15 x 10 mm block with a chamfered latch tooth on one face, a 4 mm pocket for the return spring, two side rails that ride in the housing slots and a textured thumb face. Print it tooth-up at 100 percent infill in PETG or nylon, and keep the tooth angle crisp because that is what holds the pack.
Latches vary by brand, and SpeakCAD models yours from the dimensions of the broken part, including tooth height and spring pocket. Tell it the fit is too loose and it adjusts the rails by a tenth of a millimetre. Previewing costs nothing and you only pay for the download.
Design a drill battery latch button 25 x 15 x 10 mm with a 1.5 mm tall latch tooth at 45 degrees on top, a 4.2 mm spring pocket 6 mm deep at the rear, two 1 x 2 mm guide rails on the sides, and a grooved thumb surface.